Final answer:
The correct term for ports in the 49152 to 65535 range is Dynamic ports, which are used for temporary communication sessions and are assigned automatically by the operating system.
Step-by-step explanation:
The term referring to ports in the 49152 to 65535 range is Dynamic ports or sometimes also called private ports or ephemeral ports. These ports are typically used for temporary communication sessions, and they are assigned automatically by the operating system's network stack.
Unlike the well-known ports (0-1023) which are assigned by the Internet Assigned Numbers Authority (IANA) for specific services, or the registered ports (1024-49151) used by specific applications, dynamic ports are selected on an as-needed basis for client-side communications.